Cabling Network, Wireless & Fiber Optics Installation Standards
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Retrospective on Development of Radio and Wire Data Communication
March, 2006 IEEE P802.15-06-0107-00-wng0 IEEE P802.15 Wireless Next Generation Networks Project IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Title Retrospective on Development of Radio and Wire Data Communication Date 4 March 2006 Submitted Source Chandos A. Rypinski Voice: +1.415.435.0642 consultant Fax: [- ] Tiburon, CA 94920 USA E-mail: [email protected] Re: Call for contributions for 15WNG Erik Schylander, 13 Feb 2006 Abstract An account of: the development of phase shift keying and orthogonal frequency division multiplex with carriers positioned at spectral null of the adjacent carrier at Collins Radio 1954-58, the early development of 802.3 CSMA, 802.4 Token bus and 802.5 Token ring and the 802.4L radio PHY for token bus, the 802.6 and 802.9 committee’s working on voice-data integration, the start of 802.11 from 802.4L, the original functional targets and the DFW MAC adopted as a starting point the circumstances for the development 11A and 11B. Purpose The intent is show the effect of early and current decision-making as influenced by function goals and obscure design considerations. Possibly some future choices may be better made with knowledge of these examples. Notice This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. -
Ethernet/Category 5 Network Cabling Guide Prepared by SJ Wilkinson (August 2002) Based on Steve Derose’S Guide to CAT5 Network Wiring (See Later Web Reference)
Ethernet/Category 5 Network Cabling Guide Prepared by SJ Wilkinson (August 2002) Based on Steve DeRose’s Guide to CAT5 Network Wiring (See later Web Reference) Networks A Local Area Network (LAN) can be as simple as two computers, each having a network interface card (NIC) or network adapter and running network software, connected together with a crossover cable. Here the crossover cable would have a plug at either end to connect into the NIC socket at the back of each computer. The next step up would be a network consisting of three or more computers and a hub. Each of the computers is plugged into the hub with a straight-thru cable (the crossover function is performed by the hub). For a small network the straight-thru cables would have plugs at either end – one to connect to the computer and one to the hub. For larger networks wall cabling, wall sockets and patch cables are used. A CAT5 "patch panel" is used at the hub end where all your wires come together and provides a group of sockets for further cables. Straight-thru patch cables connect computers to sockets (jacks). Straight-thru wall cables connect sockets to the patch panel. Straight-thru patch cables connect the patch panel to the hub. Patch panels often make network cabling neater but are not essential as (a) wiring a plug is no harder than wiring a panel; (b) you still need cables to go from the panel to the hub; and (c) it adds extra connections, so lowers reliability. 1 Planning your Network Pick a location for your hub, preferably centred to keep cable runs shorter. -
Dodea FACILITIES MANAGEMENT GUIDE
DoDEA FACILITIES MANAGEMENT GUIDE: TECHNOLOGY SYSTEMS DESIGN GUIDELINES DoDEA-NETWORK VERSION 2.0 DEPARTMENT OF DEFENSE EDUCATION ACTIVITY APRIL 14, 2016 UPDATED DRAFT DoDEA Technology Systems Design Guide – DoDEA Network Requirements TABLE OF CONTENTS Acronyms ........................................................................................................................................ 3 1.0 Purpose ........................................................................................................................ 5 2.0 Applicability ................................................................................................................. 5 3.0 References ................................................................................................................... 5 4.0 Responsibilities ............................................................................................................ 7 5.0 Data/Telecommunications Systems Summary ............................................................. 8 5.1 Outside Cable Plant .................................................................................................... 10 5.2 System Requirements ................................................................................................ 11 5.2.A Main Telecommunications Room (TR1) ........................................................................... 11 5.2.B Secondary Telecommunications Room (TR2) ................................................................... 13 5.2.C Video Distribution ............................................................................................................ -
1SDC010001D0204.Pdf
07 copertine 2006 28-03-2006 9:43 Pagina 2 C M Y CM MY CY CMY K Electrical installation handbook Volume 2 Electrical devices 4th edition 1SDC010001D0204 Electrical devices Due to possible developments of standards as well as of materials, the characteristics and dimensions specified in this document may only be considered binding after confirmation by ABB SACE. 1SDC010001D02045.000 - CAL 03/06 ABB SACE S.p.A. An ABB Group Company L.V. Breakers Via Baioni, 35 24123 Bergamo - Italy ABB SACE Tel.: +39 035.395.111 - Telefax: +39 035.395.306-433 http://www.abb.com Colori compositi Electrical installation handbook Volume 2 Electrical devices 4th edition March 2006 07 VOL2_frontespizio 1 10-03-2006, 10:25 First edition 2003 Second edition 2004 Third edition 2005 Fourth edition 2006 Published by ABB SACE via Baioni, 35 - 24123 Bergamo (Italy) All rights reserved 07 VOL2_frontespizio 2 10-03-2006, 10:25 Index Introduction ...............................................................................................................2 1 Standards 1.1 General aspects ............................................................................................. 3 1.2 IEC Standards for electrical installation ......................................................... 15 2 Protection of feeders 2.1 Introduction ..................................................................................................22 2.2 Installation and dimensioning of cables ......................................................... 25 2.2.1 Current carrying capacity and methods -
Getting Physical with Ethernet
ETHERNET GETTING PHYSICAL STANDARDS • The Importance of Standards • Standards are necessary in almost every business and public service entity. For example, before 1904, fire hose couplings in the United States were not standard, which meant a fire department in one community could not help in another community. The transmission of electric current was not standardized until the end of the nineteenth century, so customers had to choose between Thomas Edison’s direct current (DC) and George Westinghouse’s alternating current (AC). IEEE 802 STANDARD • IEEE 802 is a family of IEEE standards dealing with local area networks and metropolitan area networks. • More specifically, the IEEE 802 standards are restricted to networks carrying variable-size packets. By contrast, in cell relay networks data is transmitted in short, uniformly sized units called cells. Isochronous , where data is transmitted as a steady stream of octets, or groups of octets, at regular time intervals, are also out of the scope of this standard. The number 802 was simply the next free number IEEE could assign,[1] though “802” is sometimes associated with the date the first meeting was held — February 1980. • The IEEE 802 family of standards is maintained by the IEEE 802 LAN/MAN Standards Committee (LMSC). The most widely used standards are for the Ethernet family, Token Ring, Wireless LAN, Bridging and Virtual Bridged LANs. An individual working group provides the focus for each area. Name Description Note IEEE 802.1 Higher Layer LAN Protocols (Bridging) active IEEE 802.2 -
Cat 6 Cable: Copper's Last Stand?
Cat 6 Cable: Copper’s Last Stand? Cat 6 Cable is craft intensive! Advanced Installation & service skills are a MUST. 1 Cat6 Cable: Copper's Last Stand? Nope, Not yet! 10Gig IP to the rescue! What is Category 6? Unlike earlier cabling standards Category 6 is a 200MHz classification. The Category 6 standard is an integral part of the 2nd editions of the ISO 11801, TIA 568A and En5017. Initially there were only two parameters proposed for Category 6. These were that any Category 6 solution must use the existing RJ45 plug and jack format. The second was that the Powersum ACR must be positive to 200 MHz. As the standards have developed, additional parameters have been added. These standards continue to be developed and represent the pinnacle of performance for structured cabling systems. The intention behind the Category 6 standard is to provide the state-of-the-art 4-pair cabling system. The different and more stringent handling requirements for Category 6 components demand additional training, even for installers well used to the demands of Category 5e installation practices. Time, care and a high level of technical expertise are essential when installing Category 6. Even slight variations in the termination of links can have a massive effect on the overall performance of the system. It is for these reasons, that it is essential to select an installer who has an existing track record of successfully installing Category 6. With the comprehensive backing of Molex, under the Certified Installer (CI) program, SMT has the experience and track record you need to be sure that your Category 6 solution will perform for you now and in the future. -
In Tro Duc Tion Glossary of High Speed Terminology
Connectors High-Speed Glossary of High Speed Terminology Auto-MDIX A protocol which allows two Ethernet devices to negotiate their use of the Ethernet Transmit (Tx) and Receive (Rx) cable pairs. This allows two Ethernet devices with MOl or MDI-X connectors to connect without using a cross-over Introduction cable. Baud A unit of measurement that denotes the number of bits that can be transmitted per second. For example, if a mo- dem is rated at 9600 baud it is capable of transmitting data at a rate of 9600 bits per second. Bandwidth The maximum capacity of a newark channel. Usually expressed in bits per second (bps). Ethernet channels have bandwidths of 10,100, and 1000 Mbps (Gigabit). bps Bits Per Second is the unit used for measuring line speed, the number of information units transmitted per second. Broadcast A transmission initiated by one station and sent to all stations on the network. Byte The amount of memory needed to store one character such as a letter or a number. Equal to 8 bits of digital infor- mation. The standard measurement unit of a file size. Category 5 A performance classification for twisted pair cables, connectors and systems. Specified to 100 MHz. Suitable for voice and data applications up to 155 Mbps. Category 5e Also called Enhanced Category 5. A performance classification for twisted pair cables, connectors and systems. Specified to 100 MHz. Suitable for voice and data applications up to 1000 Mbps. Category 6 A performance classification for twisted pair cables, connectors and systems. Specified up to 250 MHz. -
Efecto De La Integración Tecnológica En La Centralización Y Autogestión
Efecto de la integración tecnológica en la centralización y autogestión de información turística en el Guayas Auspicio académico de la Universidad Católica Santiago de Guayaquil Autores: Guillermo Tafur Avilés Cecilia Vélez Barros Oscar J. Alejo Machado Rosa M. Zumba Córdova Julio Jácome Tapia CONTENIDO PRÓLOGO ................................................................................................................................................ 1 INTRODUCCIÓN ....................................................................................................................................... 3 CAPÍTULO I. Panorama general ............................................................................................................... 8 1.1. Las TICs y el turismo ................................................................................................................. 8 1.2. Panorama del sistema de distribución turístico ..................................................................... 12 1.3. Turismo electrónico ................................................................................................................ 14 1.4. El sector turístico y el eturismo. Amenazas y oportunidades ................................................ 16 1.5. Evolución del turismo en Ecuador .......................................................................................... 21 1.6. Turismo y tecnología en el Guayas ......................................................................................... 22 1.7. Deficiencias -
RF Video and Ethernet, Telephone Or Remote Control on Cat 5 Or Cat 6
Television and Ethernet on Cat 5 or Cat 6 Cable The Lynx® Video and Data Network Delivers television and data or phone Simplifies cable requirements on a shared Cat 5 or Cat 6 cable Increases flexibility for moves, Distributes up to 134 analog or HDTV adds and changes channels (or 402 standard definition Improves reliability digital channels) Creates a technology bridge to IPTV The Lynx Video and Data Network The Lynx Video and Data Network increases simultaneously delivers up to 134 channels system flexibility because new TVs can of television (RF) on a single twisted pair of a be added in any location where Cat 5 is Category 5 cable. The remaining three pairs available. can transmit Ethernet or telephone signals. A homerun wiring design improves reliability The Lynx Video and Data Hub converts because there are no taps or splitters coaxial television signals into balanced between the distribution hub and the TV. signals transmitted on pair four of a Cat 5 The Lynx Video and Data Network also or Cat 6 cable. Ethernet or phone signals provides a “technology bridge” to IPTV by enter the back of the hub via RJ-45 ports using the same infrastructure that IPTV will and pass through to the cable on pairs use. one, two, or three. A patented broadband balun is the At the point of use a Lynx converter changes centerpiece of the Lynx design. A pair of the television signals back to coaxial signals send/receive baluns deliver a clean RF accessible via an F connector. The Ethernet signal to each TV (on pair four). -
Computer Ports
Computer Ports In computer hardware, a port serves as an interface between the computer and other computers or peripheral devices. Physically, a port is a specialized outlet on a piece of equipment to which a plug or cable connects. Electronically, the several conductors making up the outlet provide a signal transfer between devices. The term "port" is derived from a Dutch word "poort" meaning gate, entrance or door. ETHERNET PORTS: Ethernet is a family of computer networking technologies for local area networks (LANs) commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies. Systems communicating over Ethernet divide a stream of data into individual packets called frames. Each frame contains source and destination addresses and error-checking data so that damaged data can be detected and re-transmitted. The standards define several wiring and signaling variants. The original 10BASE5 Ethernet used coaxial cable as a shared medium. Later the coaxial cables were replaced by twisted pair and fiber optic links in conjunction with hubs or switches. Data rates were periodically increased from the original 10 megabits per second, to 100 gigabits per second. Since its commercial release, Ethernet has retained a good degree of compatibility. Features such as the 48-bit MAC address and Ethernet frame format have influenced other networking protocols. HISTORY OF ETHERNET: Ethernet was developed at Xerox PARC between 1973 and 1974.[1][2] It was inspired by ALOHAnet, which Robert Metcalfe had studied as part of his PhD dissertation.[3] The idea was first documented in a memo that Metcalfe wrote on May 22, 1973.[1][4] In 1975, Xerox filed a patent application listing Metcalfe, David Boggs, Chuck Thacker and Butler Lampson as inventors.[5] In 1976, after the system was deployed at PARC, Metcalfe and Boggs published a seminal paper. -
Bently-Nevada Tdxnet Datasheet
Full-service, independent repair center -~ ARTISAN® with experienced engineers and technicians on staff. TECHNOLOGY GROUP ~I We buy your excess, underutilized, and idle equipment along with credit for buybacks and trade-ins. Custom engineering Your definitive source so your equipment works exactly as you specify. for quality pre-owned • Critical and expedited services • Leasing / Rentals/ Demos equipment. • In stock/ Ready-to-ship • !TAR-certified secure asset solutions Expert team I Trust guarantee I 100% satisfaction Artisan Technology Group (217) 352-9330 | [email protected] | artisantg.com All trademarks, brand names, and brands appearing herein are the property o f their respective owners. Find the GE / Bently Nevada 2155 at our website: Click HERE TDXnet* Bently Nevada* Asset Condition Monitoring Description The TDXnet Communications Processor provides the interface between our compatible (see note) machinery protection systems and our on-line machinery management software. It continuously collects both steady state and startup/shutdown data from all connected channels in parallel, and offers significant improvements in both data collection features and data transmission (Ethernet or serial) over previous communications processors such as TDIX, TDM, and DDM. Improved Startup/Shutdown Data Collection: New Ethernet Link to Data Manager* 2000 computers View Transient Plots during machine SU/SD SU/SD data acquisition based on Keyphasor* input Improved SDI communications with the DCS: Additional Data Types - Data access now includes rpm values and status for all four TDXnet Keyphasor transducers as part of the available data Use of RS485 with multi-drop functionality New Register Allocation - Along with the traditional grouping data by channel, TDXnet now groups MODBUS register locations by proportional data values such as Direct, Gap, 1X Amplitude, 1X Phase, etc. -
5ESS 5 Electronic Switching System (Class 5 Switch)
4ESS 4 Electronic Switching System (Class 4 switch) #5ESS 5 Electronic Switching System (Class 5 switch) 0 or 0- Zero Minus Dialing 0+ Zero Plus Dialing 0++ Zero Plus Plus Dialing 00+ or 00- Double Zero Dialing 1+ One Plus Dialing 100BASE-T Official project name for 100 Mb/s Fast Ethernet 100BASE-T4 100 Mb/s Fast Ethernet using 4-pair Category 3 cable 100BASE-TX 100 Mb/s Fast Ethernet using 2-pair Category 5 cable 100BT 100Base-T Ethernet 100VG-ANY LAN 100 Mb/s LAN using Demand Priority Protocol originally developed by Hewlett Packard and AT&T for Category 3 cable 10BASE-FL An implementation of the Institute of Electrical and Electronic Engineers (IEEE) Ethernet standard on 62 5/125-µm fiber optic cable, a baseband medium of 10 Mbps 10BASE-T An implementation of the Institute of Electrical and Electronic Engineers (IEEE) Ethernet standard on 24-AWG, unshielded, twisted-pair wiring, a baseband medium of 10 Mbps 10BASE2 An implementation of the Institute of Electrical and Electronic Engineers (IEEE) Ethernet standard on thin coaxial cable, a baseband medium of 10 Mbps The maximum segment length is just under 200m (656ft) 10BASE5 An implementation of the Institute of Electrical and Electronic Engineers (IEEE) Ethernet standard on twin axial cable, a baseband medium of 10 Mbps The maximum segment length is 500m (1,640ft) 10GbE 10 Gigabit Ethernet 1G 1st Generation wireless 2.5G 2 5 Generation wireless 2.75G 2 75 Generation wireless; humorous nickname for EDGE 23B + D 23 Bearer + 1 Delta Channels 281Q Two Binary, One Quaternary 2B + D 2 Bearer